RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in constant-time and not be rewritten as branches by the compiler. From 0.1.1 until 0.5.4, the aarch64 implementations of Cmov and CmovEq in cmov/src/backends/aarch64.rs assume high bits are zero-extended when loading values smaller than a register, so set high bits such as [8..] in a Cmov selector or [16..] of self or other in the u16 and i16 CmovEq implementations can cause left.cmovz(&right, condition) to produce incorrect output. This issue is fixed in version 0.5.4.
CVE-2026-50185
LOWPre-NVD 2.02.0—Trending — 3 sources updated this weekElevated
EchelonGraph scoreMEDIUM confidence
This low-severity CVE scores 2.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 95% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
2.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 2.0Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 2.0
- EG Score
- 2.0(medium)
- EPSS
- 5.5%
- KEV
- Not listed
Published
July 2, 2026
Last Modified
July 20, 2026
References (4)
- security-advisories@githubhttps://github.com/RustCrypto/utils/commit/dba6c355c9f241e3726d5ec2a68f9f3b519f6063
- security-advisories@githubhttps://github.com/RustCrypto/utils/releases/tag/cmov-v0.5.4
- security-advisories@githubhttps://github.com/RustCrypto/utils/security/advisories/GHSA-3rjw-m598-pq24
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/RustCrypto/utils/security/advisories/GHSA-3rjw-m598-pq24
Vendor Advisories for CVE-2026-50185(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 10× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-21 15:25 UTCEPSS rescore
- 2026-07-20 17:08 UTCEPSS rescore
- 2026-07-19 14:31 UTCEPSS rescore
- 2026-07-19 14:31 UTCEPSS rescore
- 2026-07-19 03:51 UTCEG score recompute
- 2026-07-19 02:29 UTCEPSS rescore
- 2026-07-17 18:55 UTCEG score recompute▲ 2.00
- 2026-07-17 18:54 UTCMITRE cvelistV5CVSS v3 → 2 · CVSS v4 → 2 · severity → LOW
- 2026-07-02 17:26 UTCEG score recompute
Frequently asked(5)
What is CVE-2026-50185?
CVE-2026-50185 is a low vulnerability published on July 2, 2026. RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in constant-time and not be rewritten as branches by the compiler. From 0.1.1 until 0.5.4, the aarch64 implementations of Cmov and CmovEq in cmov/src/backends/aarch64.rs assume high bits are…
When was CVE-2026-50185 disclosed?
CVE-2026-50185 was first published in the National Vulnerability Database on July 2, 2026, with the most recent update on July 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50185 actively exploited?
CVE-2026-50185 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-50185?
CVE-2026-50185 has a CVSS v3 base score of 2.0 (NVD).
How do I remediate CVE-2026-50185?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50185, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-50185
Is Your Infrastructure Affected by CVE-2026-50185?
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